WO2010013366A1 - フレックスリジッド配線板及びその製造方法 - Google Patents
フレックスリジッド配線板及びその製造方法 Download PDFInfo
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- WO2010013366A1 WO2010013366A1 PCT/JP2008/073258 JP2008073258W WO2010013366A1 WO 2010013366 A1 WO2010013366 A1 WO 2010013366A1 JP 2008073258 W JP2008073258 W JP 2008073258W WO 2010013366 A1 WO2010013366 A1 WO 2010013366A1
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- rigid
- substrate
- flex
- wiring board
- flexible substrate
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/46—Manufacturing multilayer circuits
- H05K3/4697—Manufacturing multilayer circuits having cavities, e.g. for mounting components
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- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/18—Printed circuits structurally associated with non-printed electric components
- H05K1/182—Printed circuits structurally associated with non-printed electric components associated with components mounted in the printed circuit board, e.g. insert mounted components [IMC]
- H05K1/183—Components mounted in and supported by recessed areas of the printed circuit board
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/46—Manufacturing multilayer circuits
- H05K3/4688—Composite multilayer circuits, i.e. comprising insulating layers having different properties
- H05K3/4691—Rigid-flexible multilayer circuits comprising rigid and flexible layers, e.g. having in the bending regions only flexible layers
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- H01L2224/02—Bonding areas; Manufacturing methods related thereto
- H01L2224/04—Structure, shape, material or disposition of the bonding areas prior to the connecting process
- H01L2224/05—Structure, shape, material or disposition of the bonding areas prior to the connecting process of an individual bonding area
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- H01L2224/26—Layer connectors, e.g. plate connectors, solder or adhesive layers; Manufacturing methods related thereto
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- H01L2224/48221—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked
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- H01L2224/48227—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being non-metallic, e.g. insulating substrate with or without metallisation connecting the wire to a bond pad of the item
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- H01L2224/73204—Bump and layer connectors the bump connector being embedded into the layer connector
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- H01L2924/0001—Technical content checked by a classifier
- H01L2924/00014—Technical content checked by a classifier the subject-matter covered by the group, the symbol of which is combined with the symbol of this group, being disclosed without further technical details
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- H05K1/00—Printed circuits
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- H05K1/0218—Reduction of cross-talk, noise or electromagnetic interference by printed shielding conductors, ground planes or power plane
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- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/01—Dielectrics
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- H05K2201/0187—Dielectric layers with regions of different dielectrics in the same layer, e.g. in a printed capacitor for locally changing the dielectric properties
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- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
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- H05K2201/0715—Shielding provided by an outer layer of PCB
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- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
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- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
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- H05K2201/09509—Blind vias, i.e. vias having one side closed
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- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
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- H05K2201/09536—Buried plated through-holes, i.e. plated through-holes formed in a core before lamination
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- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/30—Details of processes not otherwise provided for in H05K2203/01 - H05K2203/17
- H05K2203/308—Sacrificial means, e.g. for temporarily filling a space for making a via or a cavity or for making rigid-flexible PCBs
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- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/46—Manufacturing multilayer circuits
- H05K3/4602—Manufacturing multilayer circuits characterized by a special circuit board as base or central core whereon additional circuit layers are built or additional circuit boards are laminated
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- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
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- H05K3/4652—Adding a circuit layer by laminating a metal foil or a preformed metal foil pattern
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- H05K3/00—Apparatus or processes for manufacturing printed circuits
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
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- Y10T29/49117—Conductor or circuit manufacturing
- Y10T29/49124—On flat or curved insulated base, e.g., printed circuit, etc.
- Y10T29/49155—Manufacturing circuit on or in base
- Y10T29/49158—Manufacturing circuit on or in base with molding of insulated base
Definitions
- the present invention relates to a bendable flex-rigid wiring board partially composed of a flexible substrate and a method for manufacturing the same.
- Patent Document 1 discloses a rigid core substrate, a flexible substrate disposed adjacent to the core substrate in the horizontal direction, a flexible adhesive layer laminated on the core substrate and the flexible substrate, and a rigid portion.
- a flex-rigid wiring board having a wiring pattern formed on a flexible adhesive layer positioned and blind vias and / or through-holes connecting the wiring patterns formed in each layer is disclosed.
- Patent Document 1 In the apparatus described in Patent Document 1, there is a concern that it will not be possible to cope with further downsizing and thinning of electronic devices (such as mobile phones).
- the present invention has been made in view of such circumstances, and an object thereof is to provide a flex-rigid wiring board that can be easily reduced in thickness and a method for manufacturing the same. Another object of the present invention is to provide a flex-rigid wiring board that can more effectively utilize the space on the surface of the rigid board and a method for manufacturing the same.
- a flex-rigid wiring board includes a rigid substrate having at least one conductor and a flexible substrate having at least one conductor, and at least one recess is formed on the surface of the rigid substrate. And at least one of the conductors of the flexible board and at least one of the conductors of the rigid board are electrically connected.
- At least a part of the flexible substrate is embedded in the rigid substrate, and at least one of the conductors of the flexible substrate is electrically connected to at least one of the conductors of the rigid substrate in the embedded portion. It is good also as a composition.
- a configuration may be adopted in which a plurality of insulating layers are stacked on at least one of the rigid substrates.
- the configuration may be such that at least one connection terminal for mounting an electronic component is formed in at least one of the recesses.
- the electronic device may be mounted on the connection terminal formed in at least one of the recesses.
- the electronic component may be mounted on the connection terminal by flip chip connection.
- the flexible substrate has a conductor pattern
- the rigid substrate is disposed in a horizontal direction of the flexible substrate, covers the flexible substrate and the rigid substrate, and has an insulating layer exposing at least a part of the flexible substrate.
- the conductor pattern may be formed on the insulating layer, and the conductor pattern of the flexible substrate and the conductor pattern on the insulating layer may be connected by a plating film.
- a flex-rigid wiring board includes a rigid board having at least one conductor and a flexible board having at least one conductor, and the plurality of rigid boards sandwich the flexible board. At least one pair of opposed rigid substrates arranged to face each other, and at least one concave portion is formed on a surface of at least one rigid substrate constituting the opposed rigid substrate, and at least one conductor of the flexible substrate, It is characterized in that at least one of the conductors of the rigid substrate is electrically connected.
- At least one recess may be formed on one main surface or both front and back surfaces of one substrate.
- At least one concave portion may be formed on one main surface or both front and back surfaces of the other substrate facing the one substrate.
- At least one recess may be formed on each of the front and back surfaces of one substrate.
- At least one concave portion may be formed on each of the front and back surfaces of the other substrate facing the one substrate.
- At least a part of the flexible substrate is embedded in the rigid substrate, and at least one of the conductors of the flexible substrate is electrically connected to at least one of the conductors of the rigid substrate in the embedded portion. It is good also as a composition.
- a configuration may be adopted in which a plurality of insulating layers are stacked on at least one of the rigid substrates.
- the configuration may be such that at least one connection terminal for mounting an electronic component is formed in at least one of the recesses.
- the electronic device may be mounted on the connection terminal formed in at least one of the recesses.
- the electronic component may be mounted on the connection terminal by flip chip connection.
- the flexible substrate has a conductor pattern, and the opposing rigid substrate is disposed in a horizontal direction of the flexible substrate, covers the flexible substrate and the rigid substrate, and exposes at least a part of the flexible substrate.
- the conductor pattern may be formed on the insulating layer, and the conductor pattern of the flexible substrate and the conductor pattern on the insulating layer may be connected by a plating film.
- a flex-rigid wiring board includes a rigid board having at least one conductor and a flexible board having at least one conductor, and the plurality of rigid boards sandwich the flexible board. At least two sets of opposed rigid substrates arranged opposite to each other are formed, and at least one concave portion is formed on a surface of at least one rigid substrate constituting the opposed rigid substrate, and at least one conductor of the flexible substrate, It is characterized in that at least one of the conductors of the rigid substrate is electrically connected.
- At least one recess may be formed on one main surface or both front and back surfaces of one substrate.
- At least one concave portion is formed on one main surface or both front and back surfaces of at least one other substrate facing the one substrate. It is good also as a structure.
- At least one recess may be formed on each of the front and back surfaces of one substrate.
- At least one recess is formed on each of the front and back surfaces of at least one other substrate facing the one substrate. Good.
- the at least two pairs of opposed rigid substrates may be configured such that at least two rigid substrates are respectively disposed opposite to a common rigid substrate with the flexible substrate interposed therebetween.
- At least a part of the flexible substrate is embedded in the rigid substrate, and at least one of the conductors of the flexible substrate is electrically connected to at least one of the conductors of the rigid substrate in the embedded portion. It is good also as a composition.
- a configuration may be adopted in which a plurality of insulating layers are stacked on at least one of the rigid substrates.
- the configuration may be such that at least one connection terminal for mounting an electronic component is formed in at least one of the recesses.
- the electronic device may be mounted on the connection terminal formed in at least one of the recesses.
- the electronic component may be mounted on the connection terminal by flip chip connection.
- the flexible substrate has a conductor pattern, and at least one set of the opposed rigid substrates is disposed in a horizontal direction of the flexible substrate, covers the flexible substrate and the rigid substrate, and covers at least a part of the flexible substrate.
- An exposed insulating layer is provided, a conductor pattern is formed on the insulating layer, and the conductor pattern of the flexible substrate and the conductor pattern on the insulating layer may be connected by a plating film. .
- a manufacturing method of a flex-rigid wiring board is a manufacturing method of a flex-rigid wiring board including a rigid substrate on which insulating layers are laminated, and the insulating layer is provided with a separator provided. It is characterized by comprising a step of forming a recess having a shape corresponding to the shape of the separator on the surface of the rigid substrate by laminating and removing the separator together with the upper insulating layer after the lamination.
- a cut may be formed in a predetermined portion of the upper insulating layer, and the separator may be separated from other portions by the cut together with the upper insulating layer.
- a flex-rigid wiring board that can be easily reduced in thickness and a method for manufacturing the same.
- a flex-rigid wiring board that can more effectively use the space on the surface of the rigid substrate and a method for manufacturing the same.
- FIG. 1A is a side view of a flex-rigid wiring board according to an embodiment of the present invention.
- FIG. 1B is a plan view of a flex-rigid wiring board according to an embodiment of the present invention.
- FIG. 2 is a cross-sectional view of the flexible substrate.
- FIG. 3 is a cross-sectional view of a flex-rigid wiring board.
- FIG. 4 is a partially enlarged view of FIG. 1A.
- FIG. 5 is a diagram for explaining a process of cutting out a flexible substrate from a wafer common to a plurality of products.
- FIG. 6 is a diagram for explaining a process of cutting out the first and second insulating layers from a wafer common to a plurality of products.
- FIG. 1A is a side view of a flex-rigid wiring board according to an embodiment of the present invention.
- FIG. 2 is a cross-sectional view of the flexible substrate.
- FIG. 3 is a cross-
- FIG. 7 is a diagram for explaining a process of cutting a separator from a wafer common to a plurality of products.
- FIG. 8 is a diagram for explaining a process of manufacturing a core of a rigid substrate.
- FIG. 9A is a diagram for explaining a step of forming the first layer.
- FIG. 9B is a diagram for explaining a step of forming the first layer.
- FIG. 9C is a diagram for explaining a step of forming the first layer.
- FIG. 9D is a diagram for explaining a step of forming the first layer.
- FIG. 9E is a diagram for explaining a step of forming the first layer.
- FIG. 9F is a diagram for explaining a step of forming the first layer.
- FIG. 9A is a diagram for explaining a step of forming the first layer.
- FIG. 9B is a diagram for explaining a step of forming the first layer.
- FIG. 9C is a diagram for explaining a step of forming the first layer
- FIG. 10A is a diagram for explaining a step of forming the second layer.
- FIG. 10B is a diagram for explaining a process of forming the second layer.
- FIG. 10C is a diagram for explaining a step of forming the second layer.
- FIG. 10D is a diagram for explaining a step of forming the second layer.
- FIG. 11 is a diagram for explaining a process of cutting out the third and fourth upper insulating layers from a wafer common to a plurality of products.
- FIG. 12 is a diagram for explaining a process of cutting a separator from a wafer common to a plurality of products.
- FIG. 13A is a diagram for explaining a step of forming the third layer.
- FIG. 13B is a diagram for explaining a step of forming the third layer.
- FIG. 13C is a diagram for explaining a step of forming the third layer.
- FIG. 13D is a diagram for explaining a step of forming the third layer.
- FIG. 14A is a diagram for explaining a step of forming the fourth layer.
- FIG. 14B is a diagram for explaining a step of forming the fourth layer.
- FIG. 14C is a diagram for explaining a step of forming the fourth layer.
- FIG. 14D is a diagram for explaining a step of forming the fourth layer.
- FIG. 14E is a diagram for explaining a step of forming the fourth layer.
- FIG. 15A is a diagram for explaining a step of forming a recess.
- FIG. 15B is a diagram illustrating a state after forming the recess.
- FIG. 15A is a diagram for explaining a step of forming a recess.
- FIG. 15B is a diagram illustrating a state after forming the recess.
- FIG. 15A is
- FIG. 15C is a diagram illustrating a state after removing the copper remaining when the recess is formed.
- FIG. 16 is a diagram for explaining a modification of the flex-rigid wiring board.
- FIG. 17 is a diagram showing a flex-rigid wiring board in which electronic components are arranged in the recesses.
- FIG. 18A is a diagram illustrating a modification of the mounting mode of the electronic component.
- FIG. 18B is a diagram illustrating a modified example of the mounting mode of the electronic component.
- FIG. 19A is a diagram for explaining a modification of the flex-rigid wiring board.
- FIG. 19B is a diagram for explaining a modification of the flex-rigid wiring board.
- 19C is a diagram for explaining a modification of the flex-rigid wiring board.
- FIG. 20 is a view for explaining a modification of the flex-rigid wiring board.
- FIG. 21A is a diagram for explaining a modification of the flex-rigid wiring board.
- FIG. 21B is a diagram for explaining a modification of the flex-rigid wiring board.
- the flex-rigid wiring board 10 is mainly composed of a first rigid board 11, a second rigid board 12, and a flexible board 13.
- the one rigid substrate 11 and the second rigid substrate 12 are disposed to face each other with the flexible substrate 13 interposed therebetween.
- the first and second rigid substrates 11 and 12 are arranged in the horizontal direction of the flexible substrate 13.
- Arbitrary circuit patterns are formed on the first and second rigid substrates 11 and 12, respectively. Further, for example, an electronic component such as a semiconductor chip is connected as necessary.
- the flexible substrate 13 is formed with a stripe-shaped wiring pattern 13 a for connecting the circuit pattern of the first rigid substrate 11 and the circuit pattern of the second rigid substrate 12. The wiring pattern 13a connects the circuit patterns of the rigid substrates 11 and 12 to each other.
- the flexible substrate 13 includes a base material 131, conductor layers 132 and 133, insulating layers 134 and 135, shield layers 136 and 137, and cover lays 138 and 139. It has a laminated structure.
- the substrate 131 is made of an insulating flexible sheet, for example, a polyimide sheet having a thickness of “20 to 50 ⁇ m”, preferably about “30 ⁇ m”.
- the conductor layers 132 and 133 are made of, for example, a copper pattern having a thickness of about “5 to 15 ⁇ m”, and are formed on the front and back surfaces of the base material 131 to constitute the above-described stripe-shaped wiring pattern 13a (FIG. 1B). .
- the insulating layers 134 and 135 are made of a polyimide film having a thickness of about “5 to 15 ⁇ m” and the like, and insulate the conductor layers 132 and 133 from the outside.
- the shield layers 136 and 137 are made of a conductive layer, for example, a hardened film of silver paste, and shield electromagnetic noise from the outside to the conductor layers 132 and 133 and electromagnetic noise from the conductor layers 132 and 133 to the outside.
- the coverlays 138 and 139 are formed of an insulating film such as polyimide having a thickness of about “5 to 15 ⁇ m”, and insulate and protect the entire flexible substrate 13 from the outside.
- the rigid substrates 11 and 12, respectively, as shown in FIG. 3, are a rigid base 112, first and second insulating layers 111 and 113, first and second upper insulating layers 144 and 114, The third and fourth upper insulating layers 145 and 115 and the fifth and sixth upper insulating layers 172 and 173 are laminated.
- the rigid base 112 gives rigidity to the rigid substrates 11 and 12, and is made of a rigid insulating material such as a glass epoxy resin.
- the rigid base material 112 is spaced apart from the flexible substrate 13 in the horizontal direction.
- the rigid base 112 has substantially the same thickness as the flexible substrate 13.
- conductor patterns 112a and 112b made of, for example, copper are formed on the front and back of the rigid base 112, respectively. These conductor patterns 112a and 112b are electrically connected to higher-layer conductors (wirings) at predetermined locations, respectively.
- the first and second insulating layers 111 and 113 are formed by curing a prepreg.
- the first and second insulating layers 111 and 113 each have a thickness of about “50 to 100 ⁇ m”, preferably about “50 ⁇ m”.
- resin it is desirable for resin to have a low flow characteristic.
- Such a prepreg can be prepared by impregnating a glass cloth with an epoxy resin and then thermosetting the resin to advance the degree of curing in advance.
- the rigid base 112 and the first and second insulating layers 111 and 113 constitute the core of the rigid substrates 11 and 12, support the rigid substrates 11 and 12, and support and fix by sandwiching one end of the flexible substrate 13. To do. Specifically, as shown in FIG. 4 in which the region R11 in FIG. 1A (the joined portion of the first rigid substrate 11 and the flexible substrate 13) is enlarged, the first and second insulating layers 111 and 113 are formed. The rigid base 112 and the flexible substrate 13 are covered from both the front and back sides, and a part of the flexible substrate 13 is exposed. These first and second insulating layers 111 and 113 are superposed with coverlays 138 and 139 provided on the surface of the flexible substrate 13.
- substrate 12 and the flexible substrate 13 is the same as the structure (FIG. 4) of the connection part of the rigid board
- the resin 125 is filled in the space (the space between the members) defined by the rigid base 112, the flexible substrate 13, and the first and second insulating layers 111 and 113.
- the resin 125 oozes out from the low-flow prepreg constituting the first and second insulating layers 111 and 113 at the time of manufacture, for example, and is cured integrally with the first and second insulating layers 111 and 113. Yes.
- Vias (contact holes) 141 and 116 are formed in the portions of the first and second insulating layers 111 and 113 facing the connection pads 13b of the conductor layers 132 and 133 of the flexible substrate 13, respectively.
- the portions facing the vias 141 and 116 are formed by the shield layers 136 and 137 and the cover lays 138 and 139 of the flexible substrate 13.
- the vias 141 and 116 pass through the insulating layers 134 and 135 of the flexible substrate 13 to expose the connection pads 13b including the conductor layers 132 and 133, respectively.
- wiring patterns (conductor layers) 142 and 117 respectively formed by copper plating or the like are formed on the inner surfaces of the vias 141 and 116.
- the plating films of the wiring patterns 142 and 117 are connected to the connection pads 13b of the conductor layers 132 and 133 of the flexible substrate 13, respectively.
- the vias 141 and 116 are filled with resin, respectively.
- the resin in the vias 141 and 116 is filled by, for example, pressing the resin of the upper insulating layer (upper insulating layers 144 and 114) by pressing.
- lead patterns 143 and 118 connected to the wiring patterns 142 and 117 are formed on the upper surfaces of the first and second insulating layers 111 and 113, respectively.
- lead patterns 143 and 118 are each composed of, for example, a copper plating layer. Also, each flexible substrate 13 side end of the first and second insulating layers 111 and 113, that is, a position closer to the flexible substrate 13 than the boundary between the flexible substrate 13 and the rigid base 112, is insulated from each other. Conductor patterns 151 and 124 are arranged. The conductor patterns 151 and 124 can effectively dissipate heat generated in the rigid substrate 11.
- the rigid substrates 11 and 12 and the flexible substrate 13 are electrically connected regardless of the connector. That is, when the flexible substrate 13 enters (embeds) each of the rigid substrates 11 and 12, the flexible substrate 13 is electrically connected to each rigid substrate at the portion (embedded portion). (See FIG. 4). For this reason, even when an impact is caused by dropping or the like, the connector does not come off and contact failure does not occur.
- the rigid board is bonded and reinforced on both the front and back sides of the place where the flexible board and the rigid board are electrically connected. Even if the device is impacted by a drop, or when the temperature environment changes and stress is generated due to the difference in CTE (thermal expansion coefficient) between the rigid substrate and the flexible substrate, the electrical connection between the flexible substrate and the rigid substrate is ensured. it can.
- CTE thermal expansion coefficient
- the flex-rigid wiring board 10 has a more reliable electrical connection than a connector-connected board.
- the conductive layers 132 and 133 of the flexible substrate 13 and the wiring patterns 142 and 117 of the rigid substrates 11 and 12 are connected by tapered vias, so that they are connected by through holes extending in a direction perpendicular to the substrate surface. As compared with, stress is dispersed when subjected to an impact, and cracks and the like are less likely to occur.
- the conductor layers 132 and 133 and the wiring patterns 142 and 117 are connected by a plating film, the reliability of the connection portion is high. Furthermore, the reliability of connection is improved by filling the vias 141 and 116 with resin.
- First and second upper insulating layers 144 and 114 are laminated on the upper surfaces of the first and second insulating layers 111 and 113, respectively.
- the first and second upper insulating layers 144 and 114 are configured by curing a prepreg in which a glass cloth or the like is impregnated with a resin, for example.
- Third and fourth upper insulating layers 145 and 115 are laminated on the upper surfaces of the first and second upper insulating layers 144 and 114, respectively.
- the third and fourth upper insulating layers 145 and 115 are also configured by curing a prepreg in which, for example, a glass cloth or the like is impregnated with a resin.
- Vias (second upper layer vias) 147 and 121 connected to the vias 146 and 119 are formed in the third and fourth upper insulating layers 145 and 115, respectively.
- the vias 147 and 121 are filled with conductors 149 and 122 made of, for example, copper, and the conductors 149 and 122 are electrically connected to the conductors 148 and 120, respectively.
- a filled buildup via is formed by the vias 146 and 147 and 119 and 121.
- Conductor patterns (circuit patterns) 150 and 123 are formed on the upper surfaces of the third and fourth upper insulating layers 145 and 115, respectively. Vias 147 and 121 are connected to predetermined portions of the conductor patterns 150 and 123, respectively, so that the conductor layer 133 and the conductor pattern 123 are connected via the wiring pattern 117, the lead pattern 118, the conductor 120, and the conductor 122. In addition, the conductor layer 132 and the conductor pattern 150 are electrically connected to each other through the wiring pattern 142, the lead pattern 143, the conductor 148, and the conductor 149, respectively.
- fifth and sixth upper insulating layers 172 and 173 are stacked on the upper surfaces of the third and fourth upper insulating layers 145 and 115, respectively. These fifth and sixth upper insulating layers 172 and 173 are also configured by curing a prepreg in which, for example, a glass cloth or the like is impregnated with a resin.
- conductor patterns 176 and 177 made of, for example, copper are formed on the front and back of the substrate including the vias 174 and 175, respectively. These conductor patterns 176 and 177 are electrically connected to the conductors 149 and 122, respectively.
- patterned solder resists 298 and 299 are provided on the front and back sides of the substrate, respectively, and electrodes 178 and 179 are formed at predetermined positions of the conductor patterns 176 and 177 by, for example, chemical gold plating.
- the surface of the flex-rigid wiring board 10, particularly the surface of the rigid substrate 12, can store electronic components such as predetermined dimensions (length, width, and depth), for example, an IC (integrated circuit) chip.
- a recess (cavity) 300 having dimensions is formed.
- a freely usable space is generated in the recess 300.
- a component electrically connected to the flex-rigid wiring board 10 or a component electrically connected to another substrate can be arranged.
- the usage of the space in the recess 300 is arbitrary, and may be used for another usage such as positioning using a step.
- a flexible substrate 13 (FIG. 2) is manufactured. Specifically, a copper film is formed on both surfaces of the polyimide base material 131 processed into a predetermined size. Subsequently, by patterning the copper film, conductor layers 132 and 133 including the wiring pattern 13a and the connection pads 13b are formed. Then, insulating layers 134 and 135 made of polyimide, for example, are formed on the surfaces of the conductor layers 132 and 133 in a stacked manner. Further, a silver paste is applied to these insulating layers 134 and 135 except for the end portion of the flexible substrate 13, and the applied silver paste is cured to form shield layers 136 and 137. Subsequently, coverlays 138 and 139 are formed so as to cover the surfaces of the shield layers 136 and 137. The shield layers 136 and 137 and the coverlays 138 and 139 are formed so as to avoid the connection pads 13b.
- the wafer having the laminated structure shown in FIG. 2 is completed.
- This wafer is used as a material common to a plurality of products. That is, as shown in FIG. 5, the flexible substrate 13 having a predetermined size is obtained by cutting (cutting) the wafer into a predetermined size with, for example, a laser.
- the flexible substrate 13 thus manufactured and the first and second rigid substrates 11 and 12 are bonded to each other.
- a wafer common to a plurality of products is cut by, for example, a laser to prepare first and second insulating layers 111 and 113 having a predetermined size.
- a wafer common to a plurality of products is cut by, for example, a laser, and a separator 291 having a predetermined size is prepared.
- the rigid base 112 serving as the core of the rigid substrates 11 and 12 is also produced from a wafer 110 common to a plurality of products, for example, as shown in FIG. That is, conductor films 110a and 110b made of, for example, copper are formed on the front and back surfaces of the wafer 110, respectively, and then subjected to, for example, a predetermined lithography process (pretreatment, lamination, exposure, development, etching, film removal, inner layer inspection, etc.). Thus, the conductor films 110a and 110b are respectively patterned to form conductor patterns 112a and 112b. Subsequently, a predetermined portion of the wafer 110 is removed by, for example, a laser to obtain the rigid base material 112 of the rigid substrates 11 and 12. Then, the roughened surface is formed by processing the conductor pattern surface of the rigid base material 112 thus manufactured.
- a predetermined lithography process pretreatment, lamination, exposure, development, etching, film removal, inner layer inspection, etc.
- the rigid base 112 is made of a glass epoxy base having a thickness of, for example, “50 to 150 ⁇ m”, desirably “100 ⁇ m”, and the first and second insulating layers 111 and 113 are, for example, “20 to 150 ⁇ m”. It is composed of a prepreg having a thickness of “50 ⁇ m”.
- the separator 291 is made of, for example, a cured prepreg or a polyimide film.
- the thicknesses of the first and second insulating layers 111 and 113 are set to the same thickness so that, for example, the rigid substrates 11 and 12 have a contrasting structure on both sides.
- the thickness of the separator 291 is set to be approximately the same as the thickness of the second insulating layer 113.
- the thickness of the rigid base 112 and the thickness of the flexible substrate 13 are substantially the same.
- the gap between the rigid base 112 and the coverlays 138 and 139 is filled with the resin 125 so that the flexible substrate 13 and the rigid base 112 can be bonded more reliably. become.
- first and second insulating layers 111 and 113, the rigid base material 112, and the flexible substrate 13 cut in the steps of FIGS. 5, 6, and 8 are aligned, for example, as shown in FIG. 9A. Arrange as follows. At this time, each end portion of the flexible substrate 13 is sandwiched between the first and second insulating layers 111 and 113 and aligned.
- the separator 291 cut in the step of FIG. 7 is second insulated on one surface (for example, the upper side) of the flexible substrate 13 exposed between the rigid substrate 11 and the rigid substrate 12.
- conductor films 161 and 162 made of, for example, copper are arranged on the outer side (respectively on the front and back sides).
- the separator 291 is fixed with an adhesive, for example.
- this structure is pressure-pressed as shown in FIG. 9C, for example.
- the resin 125 is extruded from the prepregs constituting the first and second insulating layers 111 and 113, and as shown in FIG. The space between is filled.
- the resin 125 is filled in the gap, so that the flexible substrate 13 and the rigid base material 112 are securely bonded.
- Such a pressure press is performed using, for example, a hydro press apparatus under conditions of a temperature of “200 degrees Celsius”, a pressure of “40 kgf”, and a pressurization time of “3 hours”.
- the prepreg and the resin 125 constituting the first and second insulating layers 111 and 113 are cured and integrated by heating the whole.
- the coverlays 138 and 139 (FIG. 4) of the flexible substrate 13 and the resins of the first and second insulating layers 111 and 113 are polymerized. Since the resin of the insulating layers 111 and 113 is polymerized, the periphery of the vias 141 and 116 (formed in a later process) is fixed with the resin, and each connecting portion of the via 141 and the conductor layer 132 (or the via 116 and the conductor layer 133) is fixed. Connection reliability is improved.
- a CO 2 laser is irradiated from, for example, a CO 2 laser processing apparatus, thereby forming a through hole 163 as shown in FIG. 9D.
- vias 116 and 141 for example, IVH (Interstitial Via Hole) for connecting the conductor layers 132 and 133 of the flexible substrate 13 (FIG. 4) and the rigid substrates 11 and 12 are also formed.
- PN plating for example, chemical copper plating and electrolytic copper plating
- PN plating for example, chemical copper plating and electrolytic copper plating
- Copper formed by this copper plating and the existing conductor films 161 and 162 are integrated, and a copper film 171 is formed on the entire surface of the substrate including the vias 116 and 141 and the through holes 163.
- the flexible substrate 13 is covered with the conductor films 161 and 162 and does not directly touch the plating solution. Therefore, the flexible substrate 13 is not damaged by the plating solution.
- the copper film 171 on the substrate surface is patterned as shown in FIG. 9F, for example, through a predetermined lithography process (pretreatment, lamination, exposure, development, etching, peeling film, inner layer inspection, etc.).
- predetermined lithography process pretreatment, lamination, exposure, development, etching, peeling film, inner layer inspection, etc.
- the wiring patterns 142 and 117 and the lead patterns 143 and 118 connected to the conductor layers 132 and 133 of the flexible substrate 13 (FIG. 4), and the conductor patterns 151 and 124, respectively, are formed.
- copper foil is left at the end portions of the first and second insulating layers 111 and 113 on the flexible substrate 13 side.
- the roughened surface is formed by treating the copper foil surface.
- first and second upper insulating layers 144 and 114 are respectively arranged on the front and back of the resultant product, and further, conductor films 114a and 144a made of copper, for example, are provided on the outer side. Deploy. Subsequently, as shown in FIG. 10B, this structure is pressed. At this time, the vias 116 and 141 are filled with resin from the prepregs constituting the first and second upper insulating layers 114 and 144. Thereafter, the resin in the prepreg and the via is cured by, for example, heat treatment, and the first and second upper insulating layers 144 and 114 are solidified.
- the conductor films 114a and 144a are thinned to a predetermined thickness, for example, by half etching.
- vias 146 are formed in the first upper insulating layer 144 and vias 119 and cut lines 292 are formed in the second upper insulating layer 114 by, for example, laser, and desmear (smear removal) is performed.
- a conductor is formed in the vias 146 and 119 and in the cut line 292 by performing PN plating (for example, chemical copper plating and electrolytic copper plating) as shown in FIG. 10C, for example. To do.
- This conductor can also be formed by printing a conductive paste (for example, a thermosetting resin containing conductive particles) by, for example, a screen printing method.
- the conductor film on the substrate surface is thinned to a predetermined thickness by, for example, half etching, and then subjected to, for example, a predetermined lithography process (pretreatment, lamination, exposure, development, etching, peeling film, inner layer inspection, etc.).
- a predetermined lithography process pretreatment, lamination, exposure, development, etching, peeling film, inner layer inspection, etc.
- the conductor film on the substrate surface is patterned.
- the conductors 148 and 120 are formed.
- the conductor in the cut line 292 is removed by etching.
- the conductor surface is treated to form a roughened surface.
- a wafer common to a plurality of products is cut by, for example, a laser or the like to form third and fourth upper insulating layers 145 and 115 having a predetermined size. Form it.
- a wafer having a predetermined size is formed as shown in FIG. 12 by cutting a wafer common to a plurality of products with, for example, a laser.
- the separator 293 is made of, for example, a cured prepreg, a polyimide film, or the like.
- the third and fourth upper insulating layers 145 and 115 are each formed of a normal prepreg configured by impregnating a glass cloth with a resin, for example.
- the conductor films 145a and 115a are thinned to a predetermined thickness, for example, by half etching.
- vias 147 and 121 are formed in the third and fourth upper insulating layers 145 and 115, respectively, by laser, for example, and after desmear (smear removal) and soft etching are performed, for example, FIG.
- the vias 147 and 121 are filled with a conductor by PN plating (for example, chemical copper plating and electrolytic copper plating).
- This conductor can also be formed by printing a conductive paste (for example, a thermosetting resin containing conductive particles) by, for example, a screen printing method.
- a conductive paste for example, a thermosetting resin containing conductive particles
- the conductive film on the substrate surface is thinned to a predetermined thickness by, for example, half etching, and then, for example, a predetermined lithography process (pretreatment, lamination, exposure, development, etching, stripping,
- a predetermined lithography process pretreatment, lamination, exposure, development, etching, stripping
- the copper film on the substrate surface is patterned by going through an inner layer inspection and the like. Thereby, the conductors 149 and 122 and the conductor patterns 150 and 123 are formed. Thereafter, the resulting product is blackened.
- fifth and sixth upper insulating layers 172 and 173 are arranged on the front and back of the resultant, and conductor films 172a and 173a made of copper, for example, are arranged on the outer sides (respectively on the front and back). Place.
- the fifth and sixth upper insulating layers 172 and 173 are each formed of a prepreg configured by impregnating a glass cloth with a resin, for example.
- the conductor films 172a and 173a are thinned to a predetermined thickness, for example, by half etching.
- vias 174 and 175 are formed in the fifth and sixth upper insulating layers 172 and 173 by laser light or the like, respectively, and as shown in FIG. Insulating layers of each part, that is, end portions of the separator 291 (boundary portion of the second insulating layer 113 and the separator 291) and end portions of the separator 293 (boundary portion of the fourth upper insulating layer 115 and the separator 293)
- the insulating layer is removed to form cut lines (cuts) 294a to 294c, 295a, and 295b.
- the cut lines 294a to 294c are formed (cut) using, for example, the conductor patterns 151 and 124 as stoppers.
- the cut lines 295a and 295b are formed using, for example, the conductor pattern 123 as a stopper.
- the energy or irradiation time can be adjusted so that the conductor patterns 123, 124, and 151 used as stoppers are cut to some extent.
- PN plating for example, chemical copper plating and electrolytic copper plating
- a conductor is formed on the entire surface of the substrate including the vias 174 and 175.
- the conductive film on the surface of the substrate is thinned to a predetermined thickness by, for example, half-etching, and then the substrate is subjected to, for example, a predetermined lithography process (pretreatment, lamination, exposure, development, etching, stripping, etc.)
- the surface copper foil is patterned.
- conductor patterns 176 and 177 are formed as shown in FIG. 14D. Then, after the pattern is formed, the pattern is inspected.
- solder resist is formed on the entire surface of the substrate by, for example, screen printing, and the solder resist is patterned through a predetermined lithography process as shown in FIG. 14E. Thereafter, the patterned solder resists 298 and 299 are cured by heating, for example.
- the structural bodies 301 to 303 are mounted on the flexible substrate 13 as shown in FIG. 15A. Remove it by tearing it off. At this time, since the separators 291 and 293 are arranged, the separation is easy. Further, when the structures 301 to 303 are separated (removed) from other portions, the conductor pattern 151 is merely pressed against the cover lays 138 and 139 of the flexible substrate 13 by a press and is not fixed ( For this reason, a part of the conductor pattern 151 (portion in contact with the flexible substrate 13) is also removed together with the structures 301 to 303.
- a concave portion (cavity) 300 is formed in a portion (region R3) of the separator 293 on the surface of the flex-rigid wiring board 10, particularly the surface of the rigid substrate 12.
- the concave portion 300 can be used for storing electronic components, for example.
- Conductor patterns 124 and 151 and a conductor pattern 123 remain at the tip of each insulating layer facing the removed portions (regions R1 to R3), for example, as indicated by a broken line in FIG. 15B. As shown in FIG. 15C, the remaining copper is removed, for example, by mask etching (pretreatment, lamination, exposure, development, etching, stripping, etc.) as necessary.
- the electrodes 178 and 179 are formed by, for example, chemical gold plating, and then, after undergoing outline processing, warping correction, energization inspection, appearance inspection, and final inspection, the flex-rigid wiring board 10 shown in FIG. Complete.
- the end portion of the flexible substrate 13 is sandwiched between the core portions (first and second insulating layers 111 and 113) of the rigid substrates 11 and 12, and Each of the lands of the rigid substrates 11 and 12 and each of the connection pads of the flexible substrate 13 are connected by a plating film.
- a recess 300 is formed on the surface of the flex-rigid wiring board 10.
- connection terminal 180 for mounting an electronic component in the recess 300, the mounting of the electronic component is facilitated.
- the connection terminal 180 is formed together with the conductor 120 in the process shown in FIGS. 10C and 10D, for example.
- an electronic component 500 (IC chip) is mounted by so-called flip chip connection.
- the Au bump 502 provided on the electrode 501 of the electronic component 500 and the connection terminal 180 are electrically connected by a conductive adhesive 503, and the connection portion is covered with an insulating resin 504.
- the electrodes and wiring materials for mounting such electronic components are arbitrary.
- the electronic component 500 and the connection terminal 180 may be electrically connected using an ACF (AnisotropicnisConductive Film) containing conductive particles 503a.
- ACF AnaisotropicnisConductive Film
- Such an ACF connection can facilitate alignment.
- electronic components may be mounted by Au-Au connection. With such an Au—Au connection, a connection portion resistant to corrosion can be formed.
- connection method is not limited to flip chip connection, and is arbitrary.
- an electronic component may be mounted by wire bonding via a wire 503b.
- an electronic component may be mounted via a spring 503c. Or you may make it mount an electronic component with a connector.
- a recess 300 a may be formed not only on the surface of the rigid substrate 12 but also on the surface of the rigid substrate 11.
- the concave portions 300 and 300b are formed on the front and back surfaces (both end surfaces in the laminating direction of the insulating layer) of the rigid substrate 12, respectively. May be formed.
- recesses 300a and 300c may be formed on the front and back of the rigid substrate 11, respectively.
- the concave portion (recess) may be formed by removing a portion (region R3) corresponding to the space by selective etching or the like without depending on the method using the separator 293 described above. However, by using the separator 293, deep recesses (dents) can be easily formed.
- each layer can be arbitrarily changed.
- RCF Resin Coated Cupper Foil
- the rigid substrate 11 may have a conductor (wiring layer) on only one of the front and back sides of the core (the same applies to the rigid substrate 12).
- three or more rigid substrates may be connected by a flexible substrate.
- an opposing rigid substrate 1001 composed of a rigid substrate 101 and a rigid substrate 102 as a set of rigid substrates (opposed rigid substrates) opposed to each other with the flexible substrates 104 and 105 interposed therebetween.
- a structure including an opposing rigid substrate 1002 including the rigid substrate 101 and the rigid substrate 103 may be employed.
- the rigid substrates 102 and 103 are disposed so as to face the common rigid substrate 101.
- the opposing rigid substrate 1001 and the opposing rigid substrate 1002 are arranged at an angle of “90 °” with respect to each other.
- FIG. 21A the opposing rigid substrate 1001 and the opposing rigid substrate 1002 are arranged at an angle of “90 °” with respect to each other.
- the opposing rigid substrate 1001 and the opposing rigid substrate 1002 are disposed at an angle of “180 °” with respect to each other. Also in the flex-rigid wiring board having such a structure, by providing at least one recess on one main surface or both front and back surfaces of at least one of the three rigid substrates 101 to 103, an effect similar to the above effect Can be obtained. Moreover, it is good also as a structure provided with 3 or more sets of opposing rigid boards.
- the present invention can be applied to a bendable flex-rigid wiring board partially composed of a flexible substrate.
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Abstract
Description
11、12、101乃至103 リジッド基板
13、104、105 フレキシブル基板
111、113 絶縁層
114、115、144、145、172、173 上層絶縁層
116、119、121、141、146、147、174、175 ヴィア
117、142 配線パターン
118、143 引き出しパターン
120、122、148、149 導体
123、124、150、151、176、177 導体パターン
125 樹脂
131 基材
132、133 導体層
134、135 絶縁層
136、137 シールド層
138、139 カバーレイ
180 接続端子
291、293 セパレータ
292、294a乃至294c、295a、295b カットライン(切り目)
300、300a乃至300c 凹部(キャビティ)
500 電子部品
1001、1002 対向リジッド基板
Claims (32)
- 少なくとも1つの導体を有するリジッド基板と、少なくとも1つの導体を有するフレキシブル基板とを備え、
前記リジッド基板の表面に、少なくとも1つの凹部が形成され、
前記フレキシブル基板の導体の少なくとも1つと、前記リジッド基板の導体の少なくとも1つとが電気的に接続されている、
ことを特徴とするフレックスリジッド配線板。 - 前記フレキシブル基板の少なくとも一部が、前記リジッド基板に埋め込まれており、該埋め込まれた部分で、前記フレキシブル基板の導体の少なくとも1つと前記リジッド基板の導体の少なくとも1つとが電気的に接続されている、
ことを特徴とする請求項1に記載のフレックスリジッド配線板。 - 前記リジッド基板のうち、少なくとも1つの基板は、複数の絶縁層が積層されて形成されている、
ことを特徴とする請求項1に記載のフレックスリジッド配線板。 - 前記凹部の少なくとも1つには、電子部品を実装するための接続端子が少なくとも1つ形成されている、
ことを特徴とする請求項1に記載のフレックスリジッド配線板。 - 前記凹部の少なくとも1つに形成された前記接続端子には、電子部品が実装されている、
ことを特徴とする請求項4に記載のフレックスリジッド配線板。 - 前記電子部品は、フリップチップ接続により、前記接続端子に実装されている、
ことを特徴とする請求項5に記載のフレックスリジッド配線板。 - 前記フレキシブル基板は導体パターンを有し、
前記リジッド基板は、前記フレキシブル基板の水平方向に配置され、
前記フレキシブル基板と前記リジッド基板とを被覆し、前記フレキシブル基板の少なくとも一部を露出する絶縁層を備え、
該絶縁層上には、導体パターンが形成されており、
前記フレキシブル基板の導体パターンと前記絶縁層上の導体パターンとはめっき皮膜により接続されている、
ことを特徴とする請求項1に記載のフレックスリジッド配線板。 - 少なくとも1つの導体を有するリジッド基板と、少なくとも1つの導体を有するフレキシブル基板とを備え、
複数の前記リジッド基板は、前記フレキシブル基板を挟んで対向配置される対向リジッド基板を少なくとも1組構成し、
前記対向リジッド基板を構成する少なくとも1つのリジッド基板の表面には、少なくとも1つの凹部が形成され、
前記フレキシブル基板の導体の少なくとも1つと、前記リジッド基板の導体の少なくとも1つとが電気的に接続されている、
ことを特徴とするフレックスリジッド配線板。 - 前記対向リジッド基板を構成するリジッド基板のうち、一の基板の一方の主面又は表裏両面には、少なくとも1つの凹部が形成されている、
ことを特徴とする請求項8に記載のフレックスリジッド配線板。 - 前記対向リジッド基板を構成するリジッド基板のうち、前記一の基板に対向する他の基板の一方の主面又は表裏両面には、少なくとも1つの凹部が形成されている、
ことを特徴とする請求項9に記載のフレックスリジッド配線板。 - 前記対向リジッド基板を構成するリジッド基板のうち、一の基板の表裏各面には、それぞれ少なくとも1つの凹部が形成されている、
ことを特徴とする請求項8に記載のフレックスリジッド配線板。 - 前記対向リジッド基板を構成するリジッド基板のうち、前記一の基板に対向する他の基板の表裏各面には、それぞれ少なくとも1つの凹部が形成されている、
ことを特徴とする請求項11に記載のフレックスリジッド配線板。 - 前記フレキシブル基板の少なくとも一部が、前記リジッド基板に埋め込まれており、該埋め込まれた部分で、前記フレキシブル基板の導体の少なくとも1つと前記リジッド基板の導体の少なくとも1つとが電気的に接続されている、
ことを特徴とする請求項8に記載のフレックスリジッド配線板。 - 前記リジッド基板のうち、少なくとも1つの基板には、複数の絶縁層が積層されて形成されている、
ことを特徴とする請求項8に記載のフレックスリジッド配線板。 - 前記凹部の少なくとも1つには、電子部品を実装するための接続端子が少なくとも1つ形成されている、
ことを特徴とする請求項8に記載のフレックスリジッド配線板。 - 前記凹部の少なくとも1つに形成された前記接続端子には、電子部品が実装されている、
ことを特徴とする請求項15に記載のフレックスリジッド配線板。 - 前記電子部品は、フリップチップ接続により、前記接続端子に実装されている、
ことを特徴とする請求項16に記載のフレックスリジッド配線板。 - 前記フレキシブル基板は導体パターンを有し、
前記対向リジッド基板は、前記フレキシブル基板の水平方向に配置され、
前記フレキシブル基板と前記リジッド基板とを被覆し、前記フレキシブル基板の少なくとも一部を露出する絶縁層を備え、
該絶縁層上には、導体パターンが形成されており、
前記フレキシブル基板の導体パターンと前記絶縁層上の導体パターンとはめっき皮膜により接続されている、
ことを特徴とする請求項8に記載のフレックスリジッド配線板。 - 少なくとも1つの導体を有するリジッド基板と、少なくとも1つの導体を有するフレキシブル基板とを備え、
複数の前記リジッド基板は、前記フレキシブル基板を挟んで対向配置される対向リジッド基板を少なくとも2組構成し、
前記対向リジッド基板を構成する少なくとも1つのリジッド基板の表面には、少なくとも1つの凹部が形成され、
前記フレキシブル基板の導体の少なくとも1つと、前記リジッド基板の導体の少なくとも1つとが電気的に接続されている、
ことを特徴とするフレックスリジッド配線板。 - 前記対向リジッド基板の少なくとも1つを構成するリジッド基板のうち、一の基板の一方の主面又は表裏両面には、少なくとも1つの凹部が形成されている、
ことを特徴とする請求項19に記載のフレックスリジッド配線板。 - 前記対向リジッド基板の少なくとも1つを構成するリジッド基板のうち、前記一の基板に対向する少なくとも1つの他の基板の一方の主面又は表裏両面には、少なくとも1つの凹部が形成されている、
ことを特徴とする請求項20に記載のフレックスリジッド配線板。 - 前記対向リジッド基板の少なくとも1つを構成するリジッド基板のうち、一の基板の表裏各面には、それぞれ少なくとも1つの凹部が形成されている、
ことを特徴とする請求項19に記載のフレックスリジッド配線板。 - 前記対向リジッド基板の少なくとも1つを構成するリジッド基板のうち、前記一の基板に対向する少なくとも1つの他の基板の表裏各面には、それぞれ少なくとも1つの凹部が形成されている、
ことを特徴とする請求項22に記載のフレックスリジッド配線板。 - 前記少なくとも2組の対向リジッド基板は、少なくとも2つのリジッド基板が、それぞれ前記フレキシブル基板を挟んで、共通のリジッド基板に対向配置されてなる、
ことを特徴とする請求項19に記載のフレックスリジッド配線板。 - 前記フレキシブル基板の少なくとも一部が、前記リジッド基板に埋め込まれており、該埋め込まれた部分で、前記フレキシブル基板の導体の少なくとも1つと前記リジッド基板の導体の少なくとも1つとが電気的に接続されている、
ことを特徴とする請求項19に記載のフレックスリジッド配線板。 - 前記リジッド基板のうち、少なくとも1つの基板には、複数の絶縁層が積層されて形成されている、
ことを特徴とする請求項19に記載のフレックスリジッド配線板。 - 前記凹部の少なくとも1つには、電子部品を実装するための接続端子が少なくとも1つ形成されている、
ことを特徴とする請求項19に記載のフレックスリジッド配線板。 - 前記凹部の少なくとも1つに形成された前記接続端子には、電子部品が実装されている、
ことを特徴とする請求項27に記載のフレックスリジッド配線板。 - 前記電子部品は、フリップチップ接続により、前記接続端子に実装されている、
ことを特徴とする請求項28に記載のフレックスリジッド配線板。 - 前記フレキシブル基板は導体パターンを有し、
前記対向リジッド基板の少なくとも1組は、前記フレキシブル基板の水平方向に配置され、
前記フレキシブル基板と前記リジッド基板とを被覆し、前記フレキシブル基板の少なくとも一部を露出する絶縁層を備え、
該絶縁層上には、導体パターンが形成されており、
前記フレキシブル基板の導体パターンと前記絶縁層上の導体パターンとはめっき皮膜により接続されている、
ことを特徴とする請求項19に記載のフレックスリジッド配線板。 - 絶縁層が積層されてなるリジッド基板を備えるフレックスリジッド配線板の製造方法であって、
セパレータを設けた状態で前記絶縁層を積層し、その積層の後、上層の絶縁層ごと前記セパレータを除去することにより、前記リジッド基板の表面に、前記セパレータの形状に対応した形状の凹部を形成する工程を備える、
ことを特徴とするフレックスリジッド配線板の製造方法。 - 前記セパレータの除去に際しては、前記上層の絶縁層の所定部位に切り目を形成し、その切り目により、該上層の絶縁層ごと前記セパレータを他の部分から分離させ、除去する、
ことを特徴とする請求項31に記載のフレックスリジッド配線板の製造方法。
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KR101570730B1 (ko) * | 2011-11-18 | 2015-11-20 | 피킹 유니버시티 파운더 그룹 컴퍼니, 리미티드 | 리지드 플렉시블 인쇄회로기판의 제작 방법 및 리지드 플렉시블 인쇄회로기판 |
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US8609991B2 (en) | 2013-12-17 |
US9084381B2 (en) | 2015-07-14 |
KR20100101000A (ko) | 2010-09-15 |
US20120060367A1 (en) | 2012-03-15 |
TW201006335A (en) | 2010-02-01 |
CN102106197A (zh) | 2011-06-22 |
JPWO2010013366A1 (ja) | 2012-01-05 |
US20100025087A1 (en) | 2010-02-04 |
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